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Developer library · 63 free recipes

Effects, ready to ship.

Free motion recipes for real websites. Browse practical CSS and JavaScript patterns, copy a focused implementation, or let an LLM fetch the exact effect through the PocketPapi API or MCP.

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const effect = "fade-up-reveal";
await ship(effect);

All effects Scroll reveals Micro-interactions Navigation Backgrounds Text motion Components Media & layout Scroll-driven Advanced interactions Forms & feedback 3D & perspective Library starters

Featured recipeAdvanced interactions

Cursor trail

A lightweight pointer trail made from CSS variables and a few decorative dots, disabled for touch and reduced motion.

pointerCSS variablesdecorative

[data-sc-effect="cursor-trail"] { --sc-x: 50%; --sc-y: 50%; position: relative; isolation: isolate; }
[data-sc-effect="cursor-trail"]::before,
[data-sc-effect="cursor-trail"]::after { content: ""; position: absolute; z-index: -1; width: 10px; aspect-ratio: 1; border-radius: 50%; left: var(--sc-x); top: var(--sc-y); background: #8b5cf6; transform: translate(-50%, -50%); filter: blur(1px); pointer-events: none; transition: transform 220ms ease, opacity 220ms ease; }
[data-sc-effect="cursor-trail"]::after { width: 34px; background: #155eef; opacity: .2; transition-duration: 500ms; }
@media (prefers-reduced-motion: reduce) { [data-sc-effect="cursor-trail"]::before, [data-sc-effect="cursor-trail"]::after { display: none; } }

const trail = document.querySelector('[data-sc-effect="cursor-trail"]');
trail.addEventListener('pointermove', (event) => { const box = trail.getBoundingClientRect(); trail.style.setProperty('--sc-x', `${event.clientX - box.left}px`); trail.style.setProperty('--sc-y', `${event.clientY - box.top}px`); });

The foundation

Native recipes

Small, composable patterns you can paste into a plain HTML site, a CMS, or a generated staging build.

Interactive preview

Advanced interactionsCC0-style snippets

Hover lens

Move a soft lens across a visual card to reveal depth without loading a WebGL layer.

Product previews, image cards, and visual portfolios.

[data-sc-effect="hover-lens"] { --sc-x: 50%; --sc-y: 50%; position: relative; overflow: hidden; }
[data-sc-effect="hover-lens"]::after { content: ""; position: absolute; inset: 0; background: radial-gradient(100px circle at var(--sc-x) var(--sc-y), rgba(255,255,255,.7), transparent 64%); mix-blend-mode: screen; pointer-events: none; }
@media (prefers-reduced-motion: reduce) { [data-sc-effect="hover-lens"]::after { display: none; } }

document.querySelectorAll('[data-sc-effect="hover-lens"]').forEach((card) => card.addEventListener('pointermove', (event) => { const box = card.getBoundingClientRect(); card.style.setProperty('--sc-x', `${event.clientX - box.left}px`); card.style.setProperty('--sc-y', `${event.clientY - box.top}px`); }));

Interactive preview

Advanced interactionsCC0-style snippets

Modal dialog

A focus-friendly native dialog pattern with a real close button and escape behavior.

Details, confirmations, media previews, and compact onboarding steps.

[data-sc-effect="modal-dialog"] dialog { max-width: min(90vw, 32rem); border: 1px solid #dce3ee; border-radius: 12px; padding: 1.25rem; box-shadow: 0 24px 80px rgba(15,23,42,.2); }
[data-sc-effect="modal-dialog"] dialog::backdrop { background: rgba(15,23,42,.45); }
@media (prefers-reduced-motion: reduce) { [data-sc-effect="modal-dialog"] dialog { scroll-behavior: auto; } }

<div data-sc-effect="modal-dialog"><button type="button" data-dialog-open aria-haspopup="dialog">Open details</button><dialog data-dialog><p>Short supporting content.</p><button type="button" data-dialog-close>Close</button></dialog></div>
<script>const modalRoot = document.querySelector('[data-sc-effect="modal-dialog"]'); const dialog = modalRoot.querySelector('[data-dialog]'); modalRoot.querySelector('[data-dialog-open]').addEventListener('click', () => dialog.showModal()); modalRoot.querySelector('[data-dialog-close]').addEventListener('click', () => dialog.close());</script>

Interactive preview

Advanced interactionsCC0-style snippets

Command palette

Expose a small keyboard-friendly command surface for power users without adding a framework.

Dashboards, documentation, and tools with repeat users.

[data-sc-effect="command-palette"] [role="dialog"] { border: 1px solid #dce3ee; border-radius: 12px; background: #fff; box-shadow: 0 24px 70px rgba(15,23,42,.18); }
[data-sc-effect="command-palette"] [aria-selected="true"] { background: #edf4ff; color: #155eef; }
@media (prefers-reduced-motion: reduce) { [data-sc-effect="command-palette"] [role="dialog"] { transition: none; } }

const palette = document.querySelector('[data-sc-effect="command-palette"]'); const paletteDialog = palette.querySelector('[role="dialog"]'); const paletteButton = palette.querySelector('[data-palette-open]'); paletteButton.addEventListener('click', () => paletteDialog.hidden = false); palette.addEventListener('keydown', (event) => { if ((event.metaKey || event.ctrlKey) && event.key.toLowerCase() === 'k') { event.preventDefault(); paletteDialog.hidden = false; paletteDialog.querySelector('input')?.focus(); } if (event.key === 'Escape') paletteDialog.hidden = true; });

Interactive preview

Advanced interactionsCC0-style snippets

Filter chip group

A compact filter group with real pressed state and a live result label.

Resource libraries, portfolios, product lists, and search refinements.

[data-sc-effect="filter-chip-group"] { display: flex; flex-wrap: wrap; gap: .5rem; }
[data-sc-effect="filter-chip-group"] button[aria-pressed="true"] { background: #155eef; border-color: #155eef; color: #fff; }

Interactive preview

Advanced interactionsCC0-style snippets

Theme switcher

Switch a component between light and dark visual tokens while keeping the state explicit and keyboard accessible.

Preview panels, dashboards, and preference controls.

[data-sc-effect="theme-switcher"] { --sc-surface: #fff; --sc-ink: #172033; padding: 1rem; border-radius: 10px; background: var(--sc-surface); color: var(--sc-ink); transition: background 180ms ease, color 180ms ease; }
[data-sc-effect="theme-switcher"].is-dark { --sc-surface: #172033; --sc-ink: #fff; }
@media (prefers-reduced-motion: reduce) { [data-sc-effect="theme-switcher"] { transition: none; } }

const themeRoot = document.querySelector('[data-sc-effect="theme-switcher"]'); themeRoot.querySelector('button').addEventListener('click', () => { const dark = themeRoot.classList.toggle('is-dark'); themeRoot.querySelector('[data-theme-label]').textContent = dark ? 'Dark' : 'Light'; });

Bring a library when it earns its weight

Free library starters

Version-pinned starting points for open-source libraries. Review the license and performance tradeoff before adding another dependency.

For GPTs and other agents

Tell the LLM how to use the library.

Give the model a clear selection loop. It should discover, fetch, compose, then explain where it placed the effect instead of inventing a new dependency.

Recommended instruction

Use this in a system or developer prompt when the model can access the REST API or MCP.

When a user asks for website motion or an interaction effect:
1. Search PocketPapi’s effects catalog before writing a new animation.
2. Prefer a native recipe when it meets the request; use a free MIT library only when it materially reduces complexity.
3. Fetch the chosen effect by effect_id and inspect its reduced-motion and accessibility notes.
4. Compose the effect for the user’s real selector. Keep the selector scoped and do not rewrite unrelated styles.
5. Return the exact files or insertion points, explain the dependency (if any), and mention keyboard, touch, and prefers-reduced-motion behavior.
6. Never add a library from an untrusted CDN or use a versionless URL when a pinned URL is available.

Use the PocketPapi tools `sitecommander_effects_search`, `sitecommander_effects_fetch`, and `sitecommander_effects_compose` for this workflow.

No command center required.The catalog is public and read-only. Use the REST endpoints from any site or connect the bearer-authenticated MCP endpoint to an agent.

GET /api/effects MCP setup